A state office would like to determine the proportion of government vehicles that have mechanical problems on any given day of the year. They randomly call 100 offices and ask their total number of vehicles and how many of those cannot be used due to mechanical problems. For these numbers they calculate the percent of vehicles that cannot be used for each office. For example, 1 office had 5 total vehicles of which 1 was at the mechanic for a 20% vehicles that could not be used. Another office had 2 total vehicles of which 1 at the mechanic for a 50% vehicles that could not be used. What is the Parameter?

1. All state offices within the state
2. The percent of vehicles at the mechanic for all state offices
3. The percent of vehicles at the mechanic for all 100 state offices in the sample
4. 100 offices selected at random